diff --git a/platforms/nuttx/nuttx-configs/px4fmu-v5/nsh/defconfig b/platforms/nuttx/nuttx-configs/px4fmu-v5/nsh/defconfig
index af94144b573..836d7d6e7c2 100644
--- a/platforms/nuttx/nuttx-configs/px4fmu-v5/nsh/defconfig
+++ b/platforms/nuttx/nuttx-configs/px4fmu-v5/nsh/defconfig
@@ -377,6 +377,7 @@ CONFIG_STM32F7_SERIAL_RXDMA_BUFFER_SIZE=32
 CONFIG_STM32F7_FLOWCONTROL_BROKEN=y
 CONFIG_STM32F7_USART_BREAKS=y
 CONFIG_STM32F7_SERIALBRK_BSDCOMPAT=y
+CONFIG_STM32F7_USART_SINGLEWIRE=y
 
 #
 # SPI Configuration